scholarly journals Examining the Relation Between the Physical Features of 10–12 Year-Old Male Tennis Players and the Speeds of the Service Strikes

2020 ◽  
Vol 9 (2) ◽  
pp. 134 ◽  
Author(s):  
Yunus Emre BAGIS
Keyword(s):  
Pearson Correlation ◽  
Subcutaneous Fat ◽  
The Other ◽  
Positive Relation ◽  
Ball Speed ◽  
Tennis Players ◽  
Negative Relation ◽  
Width Measurements ◽  
Special Force ◽  
Hand Length

The purpose of the present study was to examine the relation between the physical characteristics of male tennis players who were aged 10–12 and their service strike speeds. A total of 13 licensed male tennis players (mean age 10.1±0.1 years, mean height 1.46±.06 m, mean body weight 38.7±1.8 kg, mean sporting age 4.7±0.3 years) who played at Middle East Technical University Tennis Club participated in the study. The demographic, anthropometric, (width, length, circumference, and subcutaneous fat) and ball speed measurements of the tennis players were taken and recorded. The data were analyzed by using the “Descriptive Statistics” and “Pearson Correlation” in the Statistical Package Program. When length measurements were examined, it was determined that although there was a positive relation between ball speeds and hand length (p<0.05); a negative relation was detected between the other measurements (p>0.05). When the width measurements were evaluated, it was determined that although there was a positive relation between ball speeds and chest, elbow and wrist widths (p<0.05); a negative relation was detected between the other measurements (p>0.05). In terms of the circumferences, although a positive relation was detected between ball speeds and arm contraction, chest, chest inspiration, and chest expiration circumference (p<0.05); a negative relation was detected between the other circumference measurements (p>0.05). When subcutaneous fat measurements were examined, it was determined that there was a negative relation between ball speeds (p>0.05). As a result, when previous studies and literature were examined, it was determined that many studies emphasized that the factors that affect the service speed of young tennis players have a positive relationship with age. It is obvious that the strength features, and depending on this, anthropometric properties improve with age. It is considered that special force and technical training drills, regardless of the age category, may affect the speed and accuracy of the service strike in tennis. Our study offers a different perspective to coaches on this subject.

Judgement of Two Causal Candidates from Contingency Information: II. Effects of Information about One Cause on Judgements of the Other Cause

2005 ◽  
Vol 58 (6) ◽  
pp. 999-1021 ◽  
Author(s):  
Peter A. White
Keyword(s):  
The Other ◽  
Positive Relation ◽  
Wagner Model ◽  
Negative Relation ◽  
Consistent Support ◽  
Causal Judgement ◽  
Consistent Tendency

When judgements are being made about two causes there are eight possible kinds of contingency information: occurrences and nonoccurrences of the outcome when both causes are present, when Cause 1 alone is present, when Cause 2 alone is present, and when neither cause is present. It is proposed that contingency information is used to some extent to judge proportionate strength, which is the proportion of occurrences of the outcome that each cause can account for. This leads to a prediction that judgements of one cause will be influenced by information about occurrences, but not nonoccurrences, of the outcome when only the other cause is present. In six experiments consistent support was found for this prediction when the cause being judged had a positive relation with the outcome, but no consistent tendency was found when the cause being judged had a negative relation with the outcome. The effects found for causes with positive contingency cannot be explained by the Rescorla–Wagner model of causal judgement nor by the hypothesis that causal judgements are based on conditional contingencies.

scholarly journals Effects of knowledge articulation and self-reflection on team performance

2018 ◽  
pp. 177-195
Keyword(s):  
Multiple Regression ◽  
Team Performance ◽  
The Other ◽  
Positive Relation ◽  
Negative Relation ◽  
Self Reflection ◽  
Individual Knowledge ◽  
Knowledge Articulation ◽  
The Individual ◽  
The Impact

The objective for this study is to investigate the impact of knowledge externalization on team performance by the study of knowledge articulation and self-reflection. Multiple regression is applied for analysis of the data collected from 401 participants. The findings designate the significant positive relation between knowledge articulation and team performance. On the other hand, self-reflection is found to have negative relation with team performance. The findings also designate interaction between individual knowledge articulation and self-reflection on team performance. An individual’s knowledge articulation is found to be more effective on team performance when the individual has high self-reflection. However, the effectiveness of an individual’s knowledge articulation on team performance is prone to be less when that individual has low self-reflection.

Pengaruh Kotbah, Musik Gereja Dan Fasilitas Gereja Terhadap Tingkat Kehadiran Jemaat

2016 ◽  
Vol 1 (1) ◽  
pp. 1-15
Author(s):  
Frederich Oscar Lontoh
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Church Music ◽  
Pearson Correlation ◽  
Descriptive Analysis ◽  
Target Population ◽  
The Other ◽  
Pearson Correlation Coefficient ◽  
Christian Church ◽  
The City

This research is titled " The influence of sermon, church music and church facilities on the level of attendance”. The purpose of research is to identify and analyze whether sermon, church music and church facilities have influence on the the level of attendance. The target population in this study is a Christian church members who live in the city of Surabaya.. Sample required is equal to 47 respondents. Through sampling stratified Random techniques.These influence was measured using Pearson correlation coefficient and multiple regression analysis, t-test and analysis of variance. Descriptive  analysis  were taken to analyze the level of attendance according to demographic groups.The hypothesis in this study are the sermon, church music and church facilities have positive and significant on the level of attendance. The results showed that collectively, there are positive and significant correlation among the sermon, church music and church facilities on the level of attendance  96,2%. It means that 96,2 % of level of attendance influenced by sermon, church music and church facilities and the other 28,9% by others. All of the variable partially have significant correlation to level of attendance.

Factors affecting behavioural disturbances in race-horses

1998 ◽  
Vol 66 (2) ◽  
pp. 475-481 ◽  
Author(s):  
I. Redbo ◽  
P. Redbo-Torstensson ◽  
F. O. Ödberg ◽  
A. Hedendahl ◽  
J. Holm
Keyword(s):  
External Factors ◽  
Small Field ◽  
Positive Relation ◽  
Main Study ◽  
Social Contacts ◽  
Factors Affecting ◽  
Negative Relation ◽  
Stereotyped Behaviours ◽  
Race Horses ◽  
And Training

AbstractThe aim of the present study was to identify relations between stereotyped behaviours (cribbing, weaving and box-walking) and wood-chewing in thoroughbred flat-racing horses (TB) and standardbred trotters and the different management, feeding and training factors to which these horses are exposed. This was obtained by inquiries to all the professional trainers of TB and trottinghorses used for racing in Sweden. The usable response rates were 61% for trotters and 72% for TB representing 4597 trotters from 234 stables and 644 TB from 38 stables. A small field study was carried out to control the validity of the main study which gave results similar to those in the main study. There was a large difference between the two horse categories in the occurrence of behavioural disturbances. The TB had significantly more stereotypies than the trotters (P < 0·001) but there were no differences in the occurrence of wood-chewing. There were several differences in external factors between the horse categories, e.g. trotters had more opportunities for social contacts with other horses, they also had more free time outside the stable and they were trained a shorter time per week than the TB. The TB were given larger amounts of concentrate than the trotters. Wood-chewing within each horse category was explained by the amount of roughage (P < 0·05 in trotters and P < 0·001 in TB) together with other factors. Stereotypies in the TB were explained by: amount of concentrate (positive relation), number of horses per trainer (positive relation) and amount of roughage (negative relation).

The Size of Societies, Stratification, and Belief in High Gods Supportive of Human Morality

1995 ◽  
Vol 14 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Frans L. Roes
Keyword(s):  
Regional Differences ◽  
Cross Cultural ◽  
The Other ◽  
Positive Relation ◽  
Other Hand ◽  
High Gods

Two hypotheses about belief in high gods supportive of human morality were tested with data from the Ethnographic Atlas and the Standard Cross-Cultural Sample. A significant positive relation between the size of societies and such a belief is demonstrated, and this relation appears to be independent of both regional differences and differences in stratification of the societies. On the other hand, stratification itself is also significantly related with the belief in high gods supportive of human morality, but this relation could not be shown to be independent of regional differences or differences in size.

scholarly journals Immunofluorescent microscopy in patients with IgA nephropathy

2019 ◽  
Vol 16 (3) ◽  
pp. 317-323
Author(s):  
K. S. Komissarov ◽  
M. V. Dmitrieva ◽  
T. A. Letkovskaya ◽  
V. S. Pilotovich ◽  
O. V. Krasko
Keyword(s):  
Gradual Increase ◽  
Pathological Findings ◽  
Positive Relation ◽  
Oxford Classification ◽  
Exclusion Criteria ◽  
Negative Relation ◽  
Endothelial Proliferation ◽  
The Oxford Classification ◽  
Acute Reaction ◽  
Igm Deposits

The aim of the study was to evaluate relations between the deposition of IgA, IgG, IgM, C3, C1q and baseline clinical features and pathological findings.According to exclusion criteria, 72 patients with diagnosed primary IgAN who were biopsied from 2015 to 2017 in the district of the Minsk city, Belarus were included for retrospective analysis. All biopsy had to be reviewed according to the Oxford classification (MEST-C). We examined the immunofluorescence staining with antibodies against IgG, IgA, IgM, C3, C1q.Mean age was 32 (26; 42.5) years, 72.2% was men, 48.6% of the patients had arterial hypertension. Median of proteinuria was 870 (355; 1420) mg/day, 8.4% of the patients had isolated hematuria, serum creatinine – 104 (89; 126.5) µmol/l.The patients with 3+ IgA deposits showed a significantly higher percentage of crescents (C1-2) than those with 2+ IgA deposits (p = 0.028). The presence of C3 deposits showed a gradual increase in the percentage of endothelial proliferation (E1) (p = 0.007). The degree of IgA deposits showed a significant negative relation to the IgM deposits (p = 0.01) and a positive relation to the C3 deposits (p = 0.001).We found that the intensity of IgA and C3 deposits is associated with histopathology markers of the acute reaction (C1-2 and E1) according to the Oxford classification. At the same time, the appearance of the IgM deposits testifies the acute phase of the disease as well as the advanced sclerotic stage in some patients.

scholarly journals Which one to trust? Exploratory analysis on astrology, science and religiosity among students in Bucharest

2021 ◽  
Vol 19 (1) ◽  
pp. 117-133
Author(s):  
Dragoș Obreja
Keyword(s):  
University Students ◽  
Negative Correlation ◽  
Strong Correlation ◽  
Statistical Significance ◽  
The Other ◽  
Contemporary Society ◽  
Negative Relation ◽  
Probability Sample ◽  
And Mathematics ◽  
Moderate Positive Correlation

Confidence in astrology remains a visible phenomenon in contemporary society, and this is a constant topic of academic interest. A survey based on 512 valid questionnaires were obtained from a non-probability sample of university students from Bucharest, in order to observe possible statistical relations between confidence in astrology, confidence in sciences such as medicine and mathematics, but also fields such as astronomy and horoscope. On the other hand, several statements have been used to measure the level of religiosity. Notable is the moderate positive correlation obtained between astrology and astronomy, but also the strong correlation between astrology and horoscope (this last correlation was expected). Broadly speaking, it is observed that astrology correlates positively with the variables that constitute the ‘inward’ component of religiosity, while the ‘outward’ component shows a rather negative correlation, but which does not enjoy a similar statistical significance. Astronomy, like medicine, outlines negative relation with the level of religiosity. Instead, the correlations that involve trust in medicine have a negative and moderate value, in relation to religiosity. In conclusion, it is observed that the trust in “strong sciences” generates more prompt correlations compared to the trust in astrology, while further studies are needed to clarify the reasons for such uncertain correlations between astrology and religiosity.

scholarly journals Hand grip strength determination for healthy males in Saudi Arabia: A study of the relationship with age, body mass index, hand length and forearm circumference using a hand-held dynamometer

2017 ◽  
Vol 45 (2) ◽  
pp. 540-548 ◽  
Author(s):  
Khalid A Alahmari ◽  
S. Paul Silvian ◽  
Ravi Shankar Reddy ◽  
Venkata Nagaraj Kakaraparthi ◽  
Irshad Ahmad ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Grip Strength ◽  
Healthy Adult ◽  
Pearson Correlation ◽  
Hand Grip Strength ◽  
Pearson Correlation Coefficient ◽  
Adult Males ◽  
Hand Grip ◽  
Hand Length ◽  
Healthy Males

Objectives To determine whether age, body mass index (BMI), hand length and forearm circumference were predictive of hand grip strength in healthy Saudi Arabian adult males. Methods This cross-sectional descriptive study recruited healthy adult male volunteers. Their anthropometric characteristics including age, BMI, hand length and forearm circumference were measured using routine techniques. Hand grip strength was assessed using a Jamar® Hydraulic Hand Dynamometer. The data were analysed using Pearson correlation coefficient ( r) as well as by a stepwise multiple linear regression analysis. Results The study included 116 healthy males who satisfied the inclusion criteria. A Pearson correlation coefficient matrix demonstrated that all the four measures, age, BMI, hand length and forearm circumference, were significantly correlated with hand grip strength. Age had an inverse correlation with hand grip strength. The anthropometric measures of hand length, age and forearm circumference accounted for 44.2% (R2 0.442) of the variation of the hand grip strength. Conclusion Hand length, age and forearm circumference significantly impacted on hand grip strength in Saudi Arabian healthy adult males.

scholarly journals Effect of breed on growth performance and carcass composition of Aberdeen Angus, Charolais,Herefordand Simmental bulls

2011 ◽  
Vol 51 (No. 2) ◽  
pp. 47-53 ◽  
Author(s):  
L. Bartoň ◽  
D. Řehák ◽  
V. Teslík ◽  
D. Bureš ◽  
R. Zahrádková
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Subcutaneous Fat ◽  
Live Weight ◽  
Carcass Composition ◽  
The Other ◽  
Live Weight Gain ◽  
Weight Gains ◽  
Dressing Percentage

Breed effects on live weight gain, slaughter characteristics and carcass composition were compared in Aberdeen Angus, Charolais, Hereford and Simmental bulls. The experiment extended over 2 years and involved totally 96 animals. The target slaughter live weights were determined 550 kg for earlier maturing breeds Aberdeen Angus and Hereford and 630 kg for later maturing breeds Charolais and Simmental. Charolais and Simmental gained more rapidly (P &lt; 0.05) than Aberdeen Angus while Hereford were intermediate. Hereford had lower (P &lt; 0.05) dressing percentage than the other breeds. Percentages of grade I meat were significantly higher (P &lt; 0.05) in Charolais and Simmental. The highest percentage of separable fat was recorded in Hereford (P &lt; 0.05). Charolais and Simmental had lower (P &lt; 0.05) thickness of subcutaneous fat over MLLT than Aberdeen Angus andHereford. The later maturing bulls generally tended to achieve higher live weight gains during the experiment, produced less fat and had higher percentage of meat from high priced joints in comparison with earlier maturing animals. &nbsp;

scholarly journals Late gestation undernutrition can predispose for visceral adiposity by altering fat distribution patterns and increasing the preference for a high-fat diet in early postnatal life

2012 ◽  
Vol 109 (11) ◽  
pp. 2098-2110 ◽  
Author(s):  
M. O. Nielsen ◽  
A. H. Kongsted ◽  
M. P. Thygesen ◽  
A. B. Strathe ◽  
S. Caddy ◽  
...  
Keyword(s):  
Subcutaneous Fat ◽  
Normal Diet ◽  
Visceral Adiposity ◽  
Late Gestation ◽  
The Other ◽  
Postnatal Life ◽  
High Fat ◽  
Sheep Model ◽  
Maternal Undernutrition ◽  
The Metabolic Syndrome

We have developed a sheep model to facilitate studies of the fetal programming effects of mismatched perinatal and postnatal nutrition. During the last trimester of gestation, twenty-one twin-bearing ewes were fed a normal diet fulfilling norms for energy and protein (NORM) or 50 % of a normal diet (LOW). From day 3 postpartum to 6 months (around puberty) of age, one twin lamb was fed a conventional (CONV) diet and the other a high-carbohydrate–high-fat (HCHF) diet, resulting in four groups of offspring: NORM-CONV; NORM-HCHF; LOW-CONV; LOW-HCHF. At 6 months of age, half of the lambs (all males and three females) were slaughtered for further examination and the other half (females only) were transferred to a moderate sheep diet until slaughtered at 24 months of age (adulthood). Maternal undernutrition during late gestation reduced the birth weight of LOW offspring (P< 0·05), and its long-term effects were increased adrenal size in male lambs and adult females (P< 0·05), increased neonatal appetite for fat-(P= 0·004) rather than carbohydrate-rich feeds (P< 0·001) and reduced deposition of subcutaneous fat in both sexes (P< 0·05). Furthermore, LOW-HCHF female lambs had markedly higher visceral:subcutaneous fat ratios compared with the other groups (P< 0·001). Postnatal overfeeding (HCHF) resulted in obesity (>30 % fat in soft tissue) and widespread ectopic lipid deposition. In conclusion, our sheep model revealed strong pre- and postnatal impacts on growth, food preferences and fat deposition patterns. The present findings support a role for subcutaneous adipose tissue in the development of visceral adiposity, which in humans is known to precede the development of the metabolic syndrome in human adults.

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